* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

.body {
  max-width: 900px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  font-family: Arial, sans-serif;
}

.header {
  text-align: center;
}

.main {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.avatar {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
}

.nav-list {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  text-decoration: none;
  color: black;
}

.nav-link:hover {
  text-decoration: underline;
}

.section-title {
  border-bottom: 1px solid #ccc;
}

.list {
  padding-left: 20px;
}

.code {
  background: #eee;
  padding: 10px;
  overflow-x: auto;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  flex-wrap: wrap;
  gap: 10px;
}

.logo {
  height: 30px;
}